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Finding the Fourth Proportional to 140.46, 192.70 and 133.57

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Solution

The fourth proportional to 140.46, 192.70 and 133.57 is: 183.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    140.46 : 192.70 = 133.57 : x
  2. Step 2: Convert to fraction form
    140.46/192.70 = 133.57/x
  3. Step 3: Cross multiply
    140.46x = 192.70 × 133.57
  4. Step 4: Simplify right side
    140.46x = 25,738.94
  5. Step 5: Solve for x
    x = 25,738.94/140.46
  6. Step 6: Final answer
    x = 183.25

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.